@article{VMUMM_2003_5_a4,
     author = {A. V. Vlakhova},
     title = {Iterationless approximations with respect to small parameter},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {29--37},
     publisher = {mathdoc},
     number = {5},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2003_5_a4/}
}